本文關(guān)鍵詞： 枸杞 施肥現(xiàn)狀 土壤養(yǎng)分 土壤NO--N累積　出處：《干旱地區(qū)農(nóng)業(yè)研究》2016年02期 　論文類型：期刊論文

【摘要】：為了摸清寧夏主要枸杞產(chǎn)區(qū)施肥現(xiàn)狀和土壤養(yǎng)分豐缺狀況,采用問卷調(diào)查的方式分別調(diào)查了寧夏中寧(n=112)和惠農(nóng)(n=20)不同樹齡枸杞施肥種類和施肥量等情況,并分別通過48和18個監(jiān)測點的土樣采集與測定,分析評價了其土壤養(yǎng)分含量現(xiàn)狀。結(jié)果表明,中寧枸杞施肥采用有機無機配施,而惠農(nóng)枸杞重施化肥,兩地枸杞施用化肥種類以尿素、二銨和復(fù)合肥為主(投入農(nóng)戶比例達88.9%~100.0%)。中寧不同樹齡枸杞N、P_2O_5、K_2O養(yǎng)分投入量分別為716~909、654~1043、149~194 kg·hm~(-2),惠農(nóng)分別為549~552、276~285、69~74 kg·hm~(-2)。兩枸杞產(chǎn)地0~30 cm耕層土壤有機質(zhì)、全氮和速效鉀平均含量差異不大,但中寧土壤速效磷平均含量(135.7 mg·kg~(-1))明顯高于惠農(nóng)(49.3 mg·kg~(-1))。兩枸杞地土壤速效氮素殘留以硝態(tài)氮為主,且隨著樹齡增加而增加。6~10年和≥10年中寧枸杞地土壤速效磷含量分別是≤5年的3.3和2.5倍,但兩地土壤速效鉀含量差異不大。因此,建議寧夏中寧和惠農(nóng)枸杞生產(chǎn)中,應(yīng)采用有機無機配施的原則,根據(jù)不同樹齡枸杞和目標(biāo)產(chǎn)量,合理控制氮、磷肥總量,適當(dāng)增施鉀肥。
[Abstract]:In order to find out the present situation of fertilization and soil nutrient deficiency in main Lycium barbarum producing areas in Ningxia. A questionnaire survey was conducted to investigate the types of fertilization and the amount of fertilizer applied to Lycium barbarum of different ages in Zhongning, Ningxia, China (112) and Huinong (20), respectively. The present situation of soil nutrient content in Zhongning Lycium barbarum was analyzed and evaluated through the collection and determination of soil samples from 48 and 18 monitoring sites respectively. The results showed that Zhongning Lycium barbarum was fertilized with organic and inorganic fertilizer, while Huanong wolfberry was reapplied with chemical fertilizer. Urea, diammonium and compound fertilizer were the main types of chemical fertilizer applied to Lycium barbarum in both places. The proportion of fertilizer applied to farmers was 88.9% and 100.0%, respectively. In Zhongning County, there were different ages of Lycium barbarum and P _ 2O _ 5. The amount of K _ 2O nutrient input was 7169909 / 65443C 149ng 路hm ~ (-2) ~ (-1) kg 路hm ~ (-2) and 549 ~ 552n ~ (276) ~ 285 / kg 路hm ~ (-2) ~ (-1), respectively. The average contents of organic matter, total nitrogen and available potassium in the soil of 030 cm layer of two Lycium barbarum were not significantly different. But the average content of available phosphorus in Zhongning soil (135.7 mg 路kg ~ (-1)) was significantly higher than that in Huinong (49.3 mg 路kg ~ (-1)). Soil available nitrogen residues were mainly nitrate nitrogen in two Lycium barbarum fields. With the increase of tree age, the content of available phosphorus in Zhongning Lycium barbarum was 3.3 and 2.5 times higher than that in 鈮，

本文編號：1444415